[62.04] The Structure of the Cygnus X Region

L.~A.~Molnar and C.~D.~Halas (U.~Iowa)

The Cygnus X region is prominent at many wavelengths.
We present the results of a comparative study aimed at establishing the
physical relationships between these various observations.
We find that the bulk of the radio emission (H~II regions)
and the infrared emission (warm dust) is associated with a bubble
surrounding the Cyg~OB2 association at a distance of 1.7~kpc.
The CO emission, by contrast, arises principally in front of
Cyg OB2, and the H I emission behind Cyg OB2.
We suggest an interpretation of these latter two observations
in terms of molecular clouds forming at the inner edge
of a spiral arm